Ran macro to clean out non used using statements and to sort the using statements.

Just to be clear. Macro just calls projectItem.Document.DTE.ExecuteCommand("Edit.RemoveAndSort") on every project item that is cs file.
Submodule GitExtensionsTest updated

Submodule GitExtensionsTest:
    > 604b166 - Settings
Japanese translation improvement.
Revert "FirstVisibleRevisionBeforeUpdate fixed when changing repository"

This reverts commit c0d8fe640486ea3194626ebfc4209e949b6aa8a1.
Revert "Row selection fixed in RevisionGrid after updating"

This reverts commit 1f055aaae3c26269683b47af5baa8fca13c6b559.
Merge pull request #1822 from kunimitaiyoh/master

Japanese translation improvement
Restore old revision grid behavior before revert
Scrolling to first visible row fixed in RevisionGrid
Merge pull request #1827 from gitextensions/hotfix/revision-grid-refresh

Hotfix for revision grid refresh